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NAC 900
120 caps
Pre-order for 03/12/2026, delivery 2–3 working days once available
Healf Zone members get free next day delivery on all orders.
Product description
Key Benefits
- Provides 900mg of N-acetyl-L-cysteine per capsule.
- NSF Certified for Sport® and screened for banned substances.
- Non-GMO and free from gluten, dairy and soy protein.
Designs for Sport® NAC 900 provides N-acetyl-L-cysteine in a formula developed for its sports supplement range. NAC is a derivative of the amino acid cysteine, and each capsule contains 900mg. NSF Certified for Sport® certification adds independent testing and banned-substance screening. The formula uses a cellulose capsule shell and non-GMO ingredients, and is made without gluten, dairy or soy protein.
Why Designs For Health is Healf
With over 20 products certified by NSF Certified for Sport®, the range meets strict standards for purity and banned-substance testing. This research-driven approach brings decades of formulation expertise into the athletic space, earning the trust of athletes and professionals working at the highest levels of performance.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Ingredients
Suggested use
Additional Information:
Food supplements and foods sold by Healf should not be used as a substitute for a varied, balanced diet and healthy lifestyle.
If you are pregnant, breastfeeding, have a medical condition, or are taking any medications, please consult with a healthcare professional before use. Use products only if the seal is intact. Store in a cool, dry place, out of the reach of young children. Do not exceed the recommended daily intake.
We make every effort to ensure that product information on our website is accurate and up to date, but packaging and ingredients may occasionally vary from images shown on site. Please refer to the product label and contact Healf before use if you have any questions regarding your specific allergies or intolerances.
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Frequently asked questions
How do we curate our products?
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
Do you have resources on how to enhance wellbeing?
The Healf Source offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
How can I find out more about the ingredients in a product?
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.

Healf Curation Process™
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.



















































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